This question already has answers here:
How to dynamically add a class to manual class names?
(16 answers)
Closed 4 years ago.
How can I pass parameters to a class name from a function?
funcName = (param) => {
return (<div className='param'>
..............
</div>) }
Use {} to inject JS code in the JSX layout:
<div className={my_parameter}>
Related
This question already has answers here:
Is it possible to implement dynamic getters/setters in JavaScript?
(5 answers)
JavaScript getter for all properties
(9 answers)
Closed 12 days ago.
Is there a way to override square-bracket accessor on a class, i.e.:
class Foo {
constructor() {
this.bar = {}
}
[prop]() {
return this.bar[prop]
}
}
This question already has answers here:
Backticks (`…`) calling a function in JavaScript
(3 answers)
Closed 1 year ago.
How the following code makes a call to odata function, is this a new language feature? what is the name of this new language feature and where can I find its reference?:
const { odata, TableClient } = require("#azure/data-tables");
const priceListResults = client.listEntities({
queryOptions: { filter: odata`price le 6` }
});
Btw, I copied the above piece of code from here: https://github.com/Azure/azure-sdk-for-js/blob/main/sdk/tables/data-tables/samples/v12/javascript/queryEntities.js
it's Tagged Templates, you can check it out at https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals#tagged_templates
This question already has answers here:
How to use a variable for a key in a JavaScript object literal?
(16 answers)
Closed 4 years ago.
I currently do:
function outer(prop_name) {
const tmp = {};
tmp[prop_name] = 'hello world';
foo(tmp);
}
Is there a way of rewriting this as:
foo(<expression>)
using an expression involving prop_name?
You can write it as
foo({ [prop_name] : 'hello_world'});
This question already has answers here:
How to namespace es6 classes (for React components)
(3 answers)
Closed 6 years ago.
I have a javascript object menu, and I want to add a property controller which should be a constructor. However, the following gives a syntax error:
class menu.foobar {
// stuff here
}
What is the right way to do this?
Use a class expression:
menu.foobar = class {}
This question already has answers here:
Adding elements to object
(19 answers)
Closed 6 years ago.
I would like to know how to add/ remove properties to object at run time in javascript? How to achieve this in javascript ?
Let's say your object is myobj
then you can add a member like this
myobj.myvar = value; or myobj["myvar"] = value;
and remove it with
delete myobj.myvar; or delete myobj["myvar"];